Abstract: A caller may set his telephone's substitute ringback tone to be identical to that of the receiver or to that of a third party. Further, a caller may provide a substitute ringback tone to another recipient as a present. A substitute ringback tone playing server in the system checks whether there is a certain key input or key input stream from the caller requesting of bringing substitute ringback tone of the called party. Responding to the request, a bringing server sets the substitute ringback tone code of the caller stored in a playing control server as that of the called party. A user interface server allows a user to select a substitute ringback tone among multiple tones stored in a database to give to another person as a present.

Abstract: A caller identification service providing system including: a biz lettering database recording identification information with respect to at least one originating terminal belonging to a subscriber and predetermined multimedia data registered by the subscriber; and a biz lettering server receiving a call request signal from the at least one originating terminal, reading the multimedia data corresponding to the identification information of the at least one originating terminal from the biz lettering database, and transmitting the call request signal including the read multimedia data to a terminating terminal.

Abstract: Method for setting substitute ringback tone of calling party to be identical with that of called party. A substitute ringback tone playing server 30 in the system checks whether there is a certain key input or key input stream from the calling party requesting of bringing substitute ringback tone of the called party. Responding to the request, a bringing server 70 sets the substitute ringback tone code of the calling party stored in a playing control server 40 as that of the called party. A user interface server 50 allows a user to select a substitute ringback tone among multiple tones stored in a database 62 to give to another person as a present.